Dead Man's PLC: Towards Viable Cyber Extortion for Operational Technology. (arXiv:2307.09549v1 [cs.CR])

For decades, operational technology (OT) has enjoyed the luxury of being
suitably inaccessible so as to experience directly targeted cyber attacks from
only the most advanced and well-resourced adversaries. However, security via
obscurity cannot last forever, and indeed a shift is happening whereby less
advanced adversaries are showing an appetite for targeting OT. With this shift
in adversary demographics, there will likely also be a shift in attack goals,
from clandestine process degradation and espionage to overt cyber extortion
(Cy-X). …

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